有限元径向弹簧式双质量飞轮设计
时间:2019-11-24 20:02 来源:毕业论文 作者:毕业论文 点击:次
| 汽车传动系统扭振问题困扰人们已久，在1985 年左右，海外发明了一种新颖的扭振减振器—DMF扭振减振器，它以优良的减振降噪的处理能力受到汽车工程界的重视，淘汰了CTD扭振减振器。 本文在查找阅读了国内外文献的前提下，介绍了 DMF 的性能以及发展。确定了双质量飞轮两自由度系统振动方程，选定了飞轮的主要参数，推导了径向弹簧型双质量飞轮的硬非线性弹性特性，并依此设计弹性机构。针对给定的发动机参数，设计了符合要求的 DMF 扭振减振器总体构成，根据结果用进行三维模型的建立，之后对主要零部件进行有限元分析。 42025 毕业论文关键词：双质量飞轮 弹性机构 建模 有限元分析 Title A certain type design of Dual Mass Flywheel -Radial Spring Abstract In order to solve the problem of the torsional vibration of car, in the middle of 1980s, there was a new type of drive system torsional vibration damper-dual mass flywheel type torsional vibration damper on the international, its excellent performance is paid attention by automobile industry. Clutch torsional damper was been eliminated by dual mass flywheel. This article’s main research result and conclusion as on the basis of reading comprehensive references, expounded in detail the assembly development, structure and performance of dual mass flywheel an showed its development tend. This article set up two freedom vibration equation system, and determined the main parameters of the dual mass flywheel. This article deduced nonlinear elastic curve of DMF-RS, and design elastic mechanism according to it. For a given engine parameters, design dual mass flywheel assembly which is fit to requirement. This article also do 3D modeling of designed dual mass flywheel, and did the finite element analysis for designed dual mass flywheel. Keywords dual mass flywheel elastic mechanism build model the finite element analysis 目录 1绪论1 1.1选题目的1 1.2CTD扭振减振器的出现.1 1.3径向弹簧型双质量飞轮概述2 1.3.1双质量飞轮的结构特点.2 1.3.2两种减振器的比较.2 1.4双质量飞轮的国内外研究状况3 1.4.1双质量飞轮的国外研究状况.3 1.4.2双质量飞轮的国内研究状况.4 1.5课题目的5 2径向弹簧型双质量飞轮的结构设计6 2.1双质量飞轮的基本结构6 2.1.1长螺旋弹簧的DMF.7 2.1.2周向布置短弹簧DMF.7 2.2双质量飞轮的结构方案选择9 2.2.1储能元件及传动元件的选择.10 2.2.2阻尼元件的选择10 2.2.3连接轴承的选择10 2.2.4弹簧布置形式的选择11 3双质量飞轮的设计计算12 3.1飞轮给定要求数据12 3.2双质量飞轮主要参数的选择12 3.2.1转动惯量参数的选择.12 3.2.2极限工作转角的选择.14 3.2.3减振器角刚度的确定.14 3.2.4摩擦阻尼力矩的确定.14 3.3飞轮外径的计算15 3.4齿圈的选择15 3.5弹簧弹性机构的设计15 3.6飞轮总成二维图及三维建模19 4零件的校核22 4.1ANSYS简要介绍22 4.2双质量飞轮的应力分析22 4.2.1创建静力学分析系统.22 4.2.2定义材料数据23 4.2.3网格划分23 4.2.4静力学分析设置24 4.2.5载荷及边界条件的添加.24 4.2.6求解25 4.3第一飞轮壳体的有限元分析结果25 4.4第二飞轮的有限元分析结果25 4.5飞轮盘的有限元分析结果26 4.6传力板的有限元分析结果27 (责任编辑：qin) |